Improvement in hinges



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N. PETERS, PHOTO-LITHOGRAFNER. WASHINGTON. im?4 JOHN R. LOMAS, OF WESTHAVEN, CONNECTICUT.

' IMPROVEMENT IN HINGES.

Specification forming part of Letters Patent No. 53,637, dated April 3,1866.

To all whom it may concern Be it known that I, JOHN R. LOMAS, of WestHaven, in the county of New Haven and State of Connecticut, haveinvented a new and useful Improvement in Concealed Hinges, and I dohereby declare the following', when taken in connection with theaccomliranying draw ings and the letters ot' reference marked thereon,to be afull, clear, and exact description ot` the same, and which saiddrawings constitute part of this specification, and represent, in-

Figurel, an edge view ofthe hinge complete, (closed5) Fig. 2, a top viewot' the same; Fig. 3, an edge view opened; Fig. 4, a top view ot' thesame; Fig. 5, a top view ofthe fixed part; Fig. 6, an edge view of thesame; Fig. 7, a top view of the movable part, and in Fig. S an edge viewofthe same.

My invention is designed with special ret'- erence to hinges forcarriage-doors, but may be used with equal facility for many otherpurposes where a concealed hinge is necessary.

To enable those skilled in the art to construct and apply myimprovement, I will pro ceed to fully describe the same as illustratedin the accompanying drawings.

A is the fixed part, or the part to be secured to the post. It consistsof a flat plate cast or wrought with a plate, B, upon its upper end,formed with a segmental groove, C. (See Figs. 5 and b.

D is the other part ot' the hinge to be secured to the door, and is aplate similar to the plate A, having upon its upper end asegment, E,(see Figs. 7 and 8,) corresponding with the groove C on the plate B, andso that when the two are placed together, as in Figs. l and 2, the twofaces ot' the plate will be parallel to each other. Upon the end of thesegment E I make a projection, F, down (see Fig. 8) to prevent thesegment from being drawn from the groove in the plate B.

To pla-ce the two parts together, as in Figs. 2 and 4, raise the part Dabove the part A, so

that the projection F will pass over the plate B, then drop itso thatthe segment E will enter the groove C.

In Figs. 2, 3, and 4, red lines, G denotes the carriage-Imst; H, thedoor. Secure the part A to the post G, cutting away onlyenough toreceive the said plate, and so as to permit the segment to be turnedinto the post, as seen in Fig. 2, the other part, D, titted to the doorH, and when thus tted, each partin its proper place, place each segmentE over its respective plate B, as denoted in blue, Fig. 2, a mortisebeing cut in the post. to permit the segment to bethus placed, asdenoted in red, Fig. 3. Then drop the door so that the segments willeach enter their respective grooves, as denoted in black, Fig. 3, inwhich position the door may be closed, as in Fig. 2, or opened, asinFig. 3, the projection F striking against the plate A to prevent thedoor opening only to a iixed given point.

It' it is desired to remove the door, open the door, as seen in Fig. 4,then raise the segments from their respective grooves, as denoted inblue, Fig. 3, when the door may be removed.

By this construction the hinge is entirely concealed, and thel postofthe carriage but little cut, and the two parts are ot' such forni thatthey may be cast so as to require very little it' any titting, and thusenable me to produce a hinge entirely concealed, and at no more costthanordinary hinges, which, as I have before stated, is applicable to otheruses than for that described.

Having, therefore, thus fully described my invention, what I claim asnew and useful, and desire to secure by Letters Patent, is-

A hinge constructed substantially as herein set forth.

JOHN n. LoMAs Witnesses:

J oHN E. EARLE, M. A. HINE.

